Steel Bars, Forgings, and Tubing, 0.65Cr - 0.70Ni - 0.25Mo (0.38 - 0.43C) (SAE 8740 Modified)

Standard:
Revised:
  • 2010-06-16
 
  • HISTORICAL Access the latest revision: AMS6324J
Publisher:
  • SAE International
Pages:
7
Scope:

This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.

These products have been used typically for parts, 0.750 inch (19.05 mm) and under in section thickness at time of heat treatment, requiring a through-hardening steel capable of developing hardness as high as 50 HRC when properly hardened and tempered and also parts of greater thickness but requiring proportionately lower hardness, but usage is not limited to such applications.

Rationale:

5 review review

History:
Standard Published Revision Status
AMS6324J 2014-08-22 Latest Revised
2010-06-16 Historical Revised
2004-07-12 Historical Revised
2000-09-01 Historical Reaffirmed
1988-07-01 Historical Revised
1972-05-15 Historical Revised
1967-11-01 Historical Revised
1964-01-31 Historical Revised
1951-06-01 Historical Revised
1945-05-01 Historical Issued
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